butt against vs jar against

butt against and jar against both are verbs.

Word	Noun	Adjective	Verb	Adverb
butt against	No	No	Yes	No
jar against	No	No	Yes	No

As verbs, butt against and jar against are synonyms defined as:

Other synonyms of butt against include bump into, knock against, run into.

butt against (verb)	jar against (verb)
lie adjacent to another or share a boundary	collide violently with an obstacle
collide violently with an obstacle